Continuity mistake: When Freder exits the Moloch machine hall, in the shot of Freder descending the stairs the two motorized utility carts are missing. (00:15:55)
Continuity mistake: Jack is finished singing Toot-Toot Tootsie and the audience is applauding. The guy sitting to the viewers left, with no cut-aways suddenly has a cigar appear in his mouth, he removes it then its back in his mouth.